我的页面网址列组件由/
分隔。我试图在BigQuery中运行SPLIT()
函数,但它只给出了第一个值。我想要特定列中的所有值。
我不明白如何使用Split string into multiple columns with bigquery中提到的Regexp_extract()
示例。
我需要类似于REGEX_SPLIT_TO_TABLE(<String>, <DELIMITER>)
的东西,它将单个字符串转换为多个列。
查询:
SELECT PK,
DATE(TIMESTAMP(CONCAT(SUBSTR(date,1,4),'-',SUBSTR(date,5,2),'-',SUBSTR(date,7,2),' 00:00:00'))) as visit_date,
hits_page_pagePath,
split(hits_page_pagePath,'/')
FROM [Intent.All2mon] limit 100
答案 0 :(得分:22)
#standardSQL
SELECT SPLIT(path, '/')[OFFSET(0)] part1,
SPLIT(path, '/')[OFFSET(1)] part2,
SPLIT(path, '/')[OFFSET(2)] part3
FROM (SELECT "/a/b/aaaa?c" path)
现在我明白你想要它们在不同的专栏中。
您提供的查询的替代方法:
SELECT FIRST(SPLIT(path, '/')) part1,
NTH(2, SPLIT(path, '/')) part2,
NTH(3, SPLIT(path, '/')) part3
FROM (SELECT "/a/b/aaaa?c" path)
NTH(X, SPLIT(s))
将提供SPLIT的Xth值。 FIRST(s)
与NTH(1, s)
答案 1 :(得分:1)
在标准sql中,您可以使用以下函数:
array[OFFSET(zero_based_offset)]
array[ORDINAL(one_based_ordinal)]
所以
SELECT SPLIT(path, '/')[OFFSET(1)] part2,
SPLIT(path, '/')[ORDINAL(2)] part2_again,
SPLIT(path, '/')[ORDINAL(3)] part3
FROM (SELECT "/a/b/aaaa?c" path)
part2 part2_again part3
a a b
在这种情况下, part1
是空字符串(在第一个斜杠之前)
答案 2 :(得分:0)
这对我有用:
SELECT SPLIT(path, '/') part
FROM (SELECT "/a/b/aaaa?c" path)
Row part
1 a
2 b
3 aaaa?c
不确定为什么它不适合你。你的数据是什么样的?
答案 3 :(得分:0)
以某种方式解决了它。
SELECT
date,
hits_time,
fullVisitorId,
visitNumber,
hits_hitNumber,
X.page_path,
REGEXP_EXTRACT(X.page_path,r'/(\w*)\/') as one,
REGEXP_EXTRACT(X.page_path,r'/\w*\/(\w*)') as two,
REGEXP_EXTRACT(X.page_path,r'/\w*\/\w*\/(\w*)') as three,
REGEXP_EXTRACT(X.page_path,r'/\w*/\w*/\w*\/(\w*)\/.*') as four
from
(
select
date, hits_time, fullVisitorId, visitNumber, hits_hitNumber,
REGEXP_REPLACE (hits_page_pagePath, '-', '') as page_path
from
[Intent.All2mon]
) X
limit 1000
答案 4 :(得分:0)
您也可以尝试使用SPLIT函数进行以下操作,但是您需要知道您的网址有多少个'/'或进行足够的输入,以便如果您的网址包含更多的'/',那么您仍然可以在单独的列
SPLIT(`url`, '/')[safe_ordinal(1)] AS `Col1`,
SPLIT(`url`, '/')[safe_ordinal(2)] AS `Col2`,
SPLIT(`url`, '/')[safe_ordinal(3)] AS `Col3`,
SPLIT(`url`, '/')[safe_ordinal(4)] AS `Col4`,
.
.
SPLIT(`url`, '/')[safe_ordinal(N)] AS `ColN`